Research on Maglev Vibration Isolation Technology for Vehicle Road Noise Control
Dali Fan, Peisong Dai, Yang Ming-liang, Wenyu Jia, Xiaoli Jia, Haibo Huang
Abstract
<div>The control of road structure noise has always been the focus and difficulty of automobile vibration and noise reduction. Aiming at the control of road structural noise, a maglev actuator suitable for automobile suspension was designed. First, the working principle of the maglev actuator and the actuator output force with the finite element model were analyzed. Based on this analysis, the structural design of the maglev actuator was completed. Second, based on a domestic SUV passenger car as a platform, the overall layout of the maglev suspension and its control system design were completed, and a suspension model equipped with a maglev actuator was established. Finally, the vibration isolation effect of maglev suspension was compared and analyzed under random road excitation. The results show that the designed maglev suspension has excellent vibration isolation performance in the 20-300 Hz frequency band, and the power loss is less than 1/1000 of the power of the automobile engine, which provides a new idea for road structure noise management.</div>